So I have recently changed over to do all upper windows WFP. I have a Window Cleaning Warehouse backpack and a CLX 27.
So far enjoying not using the ladders but have a few minor niggles that im sure I will sort out with a bit more experience but thought I'd ask for some advice too.
I noticed one of the windows I cleaned today it seemed like there were drips inside

I could tell they were inside as when I was moving the brush up and down the drips weren't moving. It was a big window were there was a horizontal bead in between the two sections so I presume water has got through there. I had my flow on high and scrubbed and rinsed all over. I think I should of turned the water off while I was cleaning the inside bead and frame, would that be better next time?
Another question; when cleaning the sills do you have the flow on high like when cleaning glass and frames or clean the sill with the water off but damp brush as the windows were all still dripping when I got round to doing the lower windows trad?